【摘 要】
：
签于目前冷凉灌区春小麦播量大,密度高,倒伏严重的情况,是影响本区小麦高产的重要因素之一,为指导大面积生产提供小麦合理密植的依据,弄清苗密度对产最的影响和影响苗密度因
论文部分内容阅读
签于目前冷凉灌区春小麦播量大,密度高,倒伏严重的情况,是影响本区小麦高产的重要因素之一,为指导大面积生产提供小麦合理密植的依据,弄清苗密度对产最的影响和影响苗密度因素的相互关系,根据省农科院百万亩丰产方领导小组的安排,做了此项试验。一、试验材料和方法试验设在武威县松树乡槐树村八组,属山水灌区,粮食产量属中上等水平,试验地前茬
Sign in the current cold and cool irrigation area of spring wheat sowing large, high density, lodging serious situation is one of the important factors affecting wheat yield in this area, in order to guide the large-scale production to provide reasonable basis for close planting of wheat basis to clarify the seedling density of the most productive Of the impact and the relationship between the density of seedlings density, according to the provincial Academy of Agricultural Sciences million hectares of high yield side leading group arrangements, did this experiment. First, the test materials and methods Experimental set in Wuwei County Pine Tree Ash Village eight groups, is a landscape irrigation, food production is the highest level, the experimental ground before crop
其他文献
Photocatalysis of InGaN nanodots grown on GaN/sapphire templates by metal organic vapor phase epitaxy is studied.Photodegradation of methylene orange by InGaN n
Research contacting chaos with fractals is carried out.First,we employ the theoretical quarter Sinai billiard model to study its chaos by using the stationary e
Based on the principles of the Hall effect for ultrasound excitation and wave propagation in a static magnetic field,the theory of ultrasound induced Hall volta
Product rotational polarization in the title reactions is investigated by employing the quasi-classical trajectory method.An accurate ground 12 A potential ener
A combination of large mass,weak spring and nano-grating is the key for a nano-grating accelerometer to measure nano-G acceleration.A novel compact nano-grating
The electron spin dynamics is investigated by the time-resolved Kerr rotation technique in a pair of special GaAs/AlGaAs asymmetric quantum well samples grown o
We present an analytical investigation for a baseline-free imaging of a defect in plate-like structures using the time-reversal of Lamb waves.We first consider
Bandgaps of chalcogenide glass hollow-core photonic crystal fibers (GLS HC-PCFs) are analyzed by using the plane-wave expansion method.A mid-infrared laser can
An improved analytical model of the drift field suppressed by the Dember field due to ambipolar diffusion in the p-type quasineutral region (p-QNR) of a forward